package com.atguigu.gmall.mq.config;

import org.springframework.amqp.core.Binding;
import org.springframework.amqp.core.BindingBuilder;
import org.springframework.amqp.core.DirectExchange;
import org.springframework.amqp.core.Queue;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;

import java.util.HashMap;
import java.util.Map;

/**
 * 延迟队列发送消息
 */
@Configuration
public class DeadLetterMqConfig {

    // 声明一些变量

    public static final String exchange_dead = "exchange.dead";
    public static final String routing_dead_1 = "routing.dead.1";
    public static final String routing_dead_2 = "routing.dead.2";
    public static final String queue_dead_1 = "queue.dead.1";
    public static final String queue_dead_2 = "queue.dead.2";

//    声明一个对列绑定死性队列
    @Bean
    public Queue queue1(){
// 队列名称，是否持久化，是否独享、排外的【true:只可以在本次连接中访问】，是否自动删除，队列的其他属性参数
        Map<String,Object> map = new HashMap<>();
        // 参数绑定 此处的key 固定值，不能随意写
        map.put("x-dead-letter-exchange",exchange_dead);
//        路由到队列2
        map.put("x-dead-letter-routing-key",routing_dead_2);
//        设置过期时间
        map.put("x-message-ttl",10*1000);
        return new Queue(queue_dead_1,true,false,false,map);
    }

//    申明交换机
    @Bean
    public DirectExchange exchange(){
        return new DirectExchange(exchange_dead,true,false,null);
    }

//    绑定队列
    @Bean
    public Binding binding1(){
        return BindingBuilder.bind(queue1()).to(exchange()).with(routing_dead_1);
    }

//    声明第二个队列
    @Bean
    public Queue queue2(){
        return new Queue(queue_dead_2,true,false,false);
    }

    //    绑定队列
    @Bean
    public Binding binding2(){
        return BindingBuilder.bind(queue2()).to(exchange()).with(routing_dead_2);
    }
}
